cover photo / image opensocial

Hi there;

I've been looking for info about to include the option "change cover foto" in the edit user profile place but I can´t find anything related to do that. The point is to give to the user the option to change/add a cover image photo on their profiles as next:

http://goalgorilla.github.io/drupal_social/profile-edit.html

Any help will be really appreciated.

Thank you.